gulpfile.js

var gulp = require('gulp');

var os = require('os');
var fs = require('fs');
var path = require('path');

/** Clear react-packager cache */
gulp.task('clear-cache', function () {
  var tempDir = os.tmpdir();

  var cacheFiles = fs.readdirSync(tempDir).filter(function (fileName) {
    return fileName.indexOf('react-packager-cache') === 0;
  });

  cacheFiles.forEach(function (cacheFile) {
    var cacheFilePath = path.join(tempDir, cacheFile);
    fs.unlinkSync(cacheFilePath);
    console.log('Deleted cache: ', cacheFilePath);
  });

  if (!cacheFiles.length) {
    console.log('No cache files found!');
  }
});